Live updates

Phil Purdy from Halifax has raised £120,000 so far by climbing Everest for Cancer Research UK. He battled treacherous conditions to scale the mountain on a day when nine other climbers lost their lives. He is hoping to raise £135,000.

22-year-old Matthew Dieumegard-Thornton from Sleaford has become one of the youngest people to reach the summit of Mount Everest. Calendar spoke to him via satellite phone and he told us how important it is for young people to get involved in challenges.

A team of injured soldiers, including one veteran from Tadcaster, attempting to

climb Mount Everest has been forced to halt the challenge because of safety fears.

A Walking With The Wounded spokesman said unseasonably warm conditions meant that it was not safe for the group to continue, with an increased number of avalanches and falling ice hampering their efforts.

We spoke via an internet link to Captain David Wiseman, 29, from Tadcaster, North Yorkshire, who was taking part.

A young mountaineer from Lincolnshire who is aiming to become one of the youngest British climbers to reach the top of Mount Everest has now made it to the base camp. It will now take Matthew Dieumegard-Thornton from Sleaford several more weeks to reach the summit.

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Injured North Yorkshire soldier Captain David Wiseman and the rest of the Walking With The Wounded expedition have climbed to an altitude of more than 4,000m on their way to Mount Everest Base Camp. Six days into their 10-day hike, the team will attempt to reach the 8,848m

summit of the world's highest mountain in May. David from Tadcaster who was shot in the chest in Afghanistan three years ago will carry the taliban bullet that almost killed him all the way to the top. He hasn't really got much choice because it's still inside him

Matthew Dieumegard-Thornton will attempt to reach the summit of Mount Everest to help raise awareness of global environmental and sustainability issues and to commemorate The Queen's Diamond Jubilee.

The 21 year old from Sleaford wants to raise money for the charity Global Angels to provide water for disadvantaged children and their communities for the next 20 years. As an ambassador of Climate Unchange he also wants to highlight the continuing fight against "environmental irresponsibility".

He will start his attempt on the 8848 metre summit in mid-April and the challenge is scheduled to take 70 days. It will follow the south-eastern route taken by Sir Edmund Hillary in 1953 when he became the first man to reach the top of Mount Everest, three days before Queen Elizabeth's coronation.

A charity expedition up Mount Everest to raise money for injured servicemen and women sets off today. Captain David Wiseman from Tadcaster is one of the group - he was shot in the chest in Afghanistan.

The group is part of the Walking with the Wounded campaign, endorsed by Prince Harry earlier this year.